/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2020-2030 郑庚伟 ZHENGGENGWEI (码匠君), <herodotus@aliyun.com> Licensed under the AGPL License
 *
 * This file is part of Dante Engine.
 *
 * Dante Engine is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published
 * by the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Dante Engine is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <https://www.herodotus.cn>.
 */

package cn.herodotus.engine.oauth2.authentication.consumer;

import cn.herodotus.engine.oauth2.authentication.utils.OAuth2ConfigurerUtils;
import cn.herodotus.engine.oauth2.core.definition.service.ClientDetailsService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.security.authentication.AuthenticationProvider;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.oauth2.core.OAuth2Token;
import org.springframework.security.oauth2.server.authorization.OAuth2AuthorizationService;
import org.springframework.security.oauth2.server.authorization.token.OAuth2TokenGenerator;

import java.util.List;
import java.util.function.Consumer;

/**
 * <p>Description: OAuth2ClientCredentialsAuthenticationProvider 扩展 </p>
 * <p>
 * 用于替换 SAS 默认配置的 OAuth2ClientCredentialsAuthenticationProvider，以实现功能的扩展
 *
 * @author : gengwei.zheng
 * @date : 2023/9/1 14:29
 */
public class OAuth2ClientCredentialsAuthenticationProviderConsumer implements Consumer<List<AuthenticationProvider>> {

    private static final Logger log = LoggerFactory.getLogger(OAuth2ClientCredentialsAuthenticationProviderConsumer.class);

    private final HttpSecurity httpSecurity;
    private final ClientDetailsService clientDetailsService;

    public OAuth2ClientCredentialsAuthenticationProviderConsumer(HttpSecurity httpSecurity, ClientDetailsService clientDetailsService) {
        this.httpSecurity = httpSecurity;
        this.clientDetailsService = clientDetailsService;
    }

    @Override
    public void accept(List<AuthenticationProvider> authenticationProviders) {
        authenticationProviders.removeIf(authenticationProvider ->
                authenticationProvider instanceof org.springframework.security.oauth2.server.authorization.authentication.OAuth2ClientCredentialsAuthenticationProvider);

        OAuth2AuthorizationService authorizationService = OAuth2ConfigurerUtils.getAuthorizationService(httpSecurity);
        OAuth2TokenGenerator<? extends OAuth2Token> tokenGenerator = OAuth2ConfigurerUtils.getTokenGenerator(httpSecurity);
        cn.herodotus.engine.oauth2.authentication.provider.OAuth2ClientCredentialsAuthenticationProvider provider = new cn.herodotus.engine.oauth2.authentication.provider.OAuth2ClientCredentialsAuthenticationProvider(authorizationService, tokenGenerator, clientDetailsService);
        log.debug("[Herodotus] |- Custom OAuth2ClientCredentialsAuthenticationProvider is in effect!");
        authenticationProviders.add(provider);
    }
}
